找龙坝河特大桥主拱肋施工关键技术

Key Technology of Main Arch Rib Construction of Zhaolongba River Bridge

摘要: 结合深谷地形上承式钢管混凝土拱225 m主拱肋的安装施工，详细地介绍了主拱肋顺利合龙的施工经验，通过配置相应的吊装设备及制定可行的实施方案，有效解决节段拼装施工难度大、安全风险高、气候不利因素的影响，确保了主拱肋拼装线性和安装精度，可为今后类似工程施工提供很好的借鉴。

Abstract: Combined with the installation and construction of 225 m main arch rib of concrete filled steel tube arch in deep valley, the construction experience of smooth closure of main arch rib is intro-duced in detail. By configuring the corresponding hoisting equipment and formulating the feasible implementation scheme, the influence of the difficulty of segment assembly construction, high safety risk and high climate adverse factors can be effectively solved, and the assembly linearity and installation accuracy of the main arch rib can be ensured, which can provide a good reference for the construction of similar projects in the future.